Steam-generator.



J. W. KIDNEY.

STEAM GENERATOR.

1.1 2111011121011 FILED DBO.27, 1911.

1,021,935, Patented Apr. 2,1912.

2 SHBYETSSIHBET 1.

Attbrhys J. W. KIDNEY.

STEAM GENERATOR. APPLIIOATIOH rum) DBO. 27, 1911.

Patented Apr. 2, 1912.

2 SHEETS-SHEET z.

Inventor v Attorneys JAMES w. KIDNEY, 0E POINT PLEASANT, WEST VIRGINIA.

' STEAM-GENERATOR.

Specification of Letters Patent.

Patented Apr. 2, 1912.

.Application filed necember 27, 1911. Serial No. 668,168.

To all whom it may concern:

Be it known that I, JAMES W. KIDNEY, a citizen of the United States, residing at Point Pleasant, in the county of Mason and State of West Virginia, have invented a new and'useful Steam-Generator, of which the following is a specification.

The present invention relates to improvements in steam generators, the present invention being the novel construction and arrangement of a steam generator attachment adapted to be connected to, either a plain drum to convert the same into a water tube boiler, or to a common return flue or tubular boiler to produce a combination water tube and tubular boiler in one, the present invention being readily attached to any one of the above structures to produce a means whereby the generation of the steam is increased to the maximum with the minimum amount of fuel consumption. I

A further object of the present invention is the provision of a steam generator in which the circulation of the boiler is increased and the consumption of fuel is reduced, the same being so constructed as to avoid the possibility of burning or bagging the shell of the boiler, by changing an exteriorly fired boiler into an interiorly fired boiler. In most instances the drum or boiler isexposed to the direct action of the fire, while only the generator attachment in the present case is exposed to the fire, the main portion or drum being protected from the direct heat of the fire, while the circulating tubes which are connected to said drum and in which the steam is generated is disposed directly in the fire box and main portion of the flue so as to receive the maximum amount of heat with the minimum amount of surface exposed to generate from the water within such surfaces the desired steam.

With the foregoing and other objects in view which will appear as the description proceeds, the inventionresides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that In the drawingsFigure 1 is a longitudinal sectional view through a complete steam generator constructed according to and embodying the present invention. Fig. 2 is a side elevation of the boiler drum removed with the present invention attached thereto. Fig. 3 is a front elevation of the completesteam generator, the b-reeching or smoke stack being shown in section. Fig. A is a section taken on line 4-4 of Fig. 1. Referring to the drawings, A designates the main portion of the boiler support and lower portion of the fire box B, which as usual is provided with the grate bars and ash pit'P. 1

Mounted upon the brick foundation or portion of the generator is the shell 1 which is adapted to contain the water to be heated and from which the steam is generated, the

said shell being disposed longitudinally upon the curved brick or tile baflie 2, which thus with the lower wall 2? of the casing and the fire box forms a main fire box for the generator the full length below the boiler shell 1, thus protecting the said shell 1 from the direct flame. The products of combustion and flame generated in the fire box B follow the direction of the arrows Fig. 1 passing to the space 3 into the rear end 4 of the combustion chamber and through the horizontally disposed longitudinal tube flues 5 into the breeching or smoke stack connection 6. By this means the direct rays or flames'cannot come into contact with the under portion of the boiler shell 1 but are directed through the flue tubes 5 as indicated in Fig. 1. I

Disposed within the dome of the shell 1 and-extending from near a point at the rear wall thereof toward the front of the shell, the distance from the front being greater than the distance from the rear wall is the steam gathering and conducting conduit or reservoir 7 provided upon the upper side thereof with the perforations 8 and with the upstanding steam conducting spouts 9 and 9. By this means the steam is conducted away from the boiler to the desired point.

Leading into the shell upon opposite sides thereof and at a point vbelow the water line of the shell 1 are the steam conducting tubes or conduits 10 and 10 respectively, whose lower ends are'connected to the re spective longitudinally disposed drums 11 4 and 11 which are mounted at each side of the main portion A of the boiler support and are kept from direct contact with the flame within the fire box by means of the battle plates 2 which are disposed longitudinally within the fire box of the boiler as clearly shown in Fig. 1. Leading from the respective drums 11 and 11 are the steam generating tubes or conduits 12 and 12 respectively which are disposed at an angle and inclined as indicated in Fig. 4 transversely of the fire box B and the lower portion 3 thereof, their lower ends being in communication with the longitudinally disposed water supply drums 13 and 13 respectively, which are disposed directly below and in line with the respective drums 11 and 11.

In order to supply the water from the shell 1 to the respective drums 13 and 13, the conduits or pipes 15 and 15 are connected to the shell 1 in its lowermost point and in spaced relation throughout the length of said shell and have their lower terminals 14: and 1 1 respectively, disposed to communicate with the respective drums 13 and 13'.

In order that the water may be supplied to the shell 1, the pipe or conduit 16 is disposed longitudinally of and near the bottom of the shell 1, as indicated in Figs. 1 and 4, the same being provided with sealed ends and having the perforations 17 formed in the upper portion thereof throughout the length so that the Water conducted through the conduit 18 from the water supply (not shown) will be admitted to the shell 1 at the lowermost point thereof and as the conduit 18 is disposed through the body of the shell 1, the water before being finally ejected into the casing 1 is heated by passing through the body of hot water and steam within the shell 1.

From the foregoing description taken in connection with the drawings, it is evident that the only portion that receives the direct heat from the fire box are the steam generating pipes or conduits 12 or 12, the tile wall 2 and the side walls or baffles 2' shielding the shell 1 and the respective drums 11, 11 and 13 and 13 from such action, and thus preventing the consequent burning, bagging, or exploding of the shell or the drums and at the same time reducing the consumption of fuel in the proper ratio to the maximum amount of steam generated, in that the tubes 12 and 12, containing the water supplied from the drums 13 and 13' respectively, are only subjected to the direct rays of heat within the fire box. Further by disposing the said drums upon the exterior of the fire box, the same may be placed in ready reach for repair and cleaning and by reason of the fact that the plugs 19, which are disposed opposite the respective mouths of the pipes 12 and 12, the said pipes 12 and 12 may be readily cleaned, removed and replaced from the exterior.

It is evident from the construction herein set forth, that the steam generated in the fire box and in the respective tubes or conduits 12 and 12, will pass upwardly into the respective retorts or drums 11 and 11 and through the steam conduits or pipes 10 and 10 into the upper portion of the shell 1. The water supplied to the respective drums 13 and 13' is driven from the lowermost portion of the shell 1 through the conduits 15 and 15' so that a proper circulation of the water and generation of the steam are produced with the minimum amount of fuel consumption and with less liability of damage to the respective drums and boiler shell. It is also evident that this attachment may be placed upon a plain drum boiler, converting the same into a water tube boiler or upon a common return flue or tubular boiler, to convert the same into a combination water tube and tubular boiler. The present steam generator is also designed to occupy the least floor space, the height being reduced so that the same may be readily used for marine purposes where the height in nearly all cases is limited to a stated maximum.

The four drums 11 and 11', and 13 and 13, are preferably made in section with four conduits 12 and 12 to a section, so that a complete generator can be assembled by coupling the desired number of sections together.

Vhat is claimed is:

1. A steam generator, having a fire box closed at its side and dome, a boiler shell disposed above the dome and out of direct contact with the flames from the fire box, a pair of superposed longitudinal drums disposed upon each side of the fire box and also out of direct contact with the flames, two sets of conduits leading from the shell to the respective lower drums, two sets of steam conduits leading from the respective upper drums to the shell, and steam generator conduits in communication with the respective lower and upper drums and disposed transversely of and within the fire box.

2. A steam generator, having a casing, a fire box having a sealed dome and side walls, a cylindrical boiler shell disposed above the dome and out of direct contact with the flames from the fire box, two superposed longitudinal drums mounted upon each side of the fire box throughout the length thereof, one set of conduits leading from each respective lower drum of the lower portion of the shell to supply water from the shell to the lower drums, a set of steam conduits leading from the respective upper drums to the upper portion of the shell, and a plurality of water tubes disposed transversely of and within the fire box, said water tubes being connected to receive water from the respective lower drums and convey the same of the fire box and out of direct contact with the flames, a plurality of flue tubes 'di'sposed longitudinally of the shell, a combustion chamber interposed between the inner end of the fire box and said tubes of vthe shell, a smoke breeching disposed at the opposite end of the shell to receivethe products of combustion from the flue tubes, two superposed cylindrical drums disposed longitudinally of and within the walls of the fire box and out of direct contact with the flames, a set of conduits to each lower drum for supplying water from the lower portion of the cylindrical shell to its respective lower drums,aset of steam conducting conduits for supplying steam from its respective upper drum to the cylindrical shell connected to the respective upper drums and to the shell, and a plurality of steam generator tubes disposed transversely of and within the fire box, said tubes having their lower ends in communication with the lower drums and with their upper ends with the upper drums.

in communication I 4. A steam generator, having a longitudinally disposed fire box with a sealed dome and side walls, a cylindrical boiler shell disposed longitudinally of and above the dome of the fire box and out'of direct contact with the flames, a plurality of flue tubes disposed longitudinally of the shell, two superposed cylindrical drums disposed longitudis nally of and within the walls ofthe fire box and out of direct contact with the flames, a set of conduits to each lower drum for supplying water from the lower portion of the cylindrical shell to its respective lower drums, a set of steam conducting conduits for supplying steam from its respective up- I per drum tothe cylindrical shell connected to the respective upper drums and to the shell, and a plurality of steam generator tubes disposed transversely of and within the fire box, said tubes having their lower ends in communication with the lower drums and with their upper ends in communication with the upper drums.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES W. KIDNEY.

Witnesses:

N. M. LAWHEAD, WILLIAM E. MONROE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

